--- header unit 0: primary ---
SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 720 / length of data axis 1
NAXIS2 = 360 / length of data axis 2
EXTEND = T / FITS dataset may contain extensions
CHECKSUM = 'akERdkEQakEQakEQ' / HDU checksum updated 2024-07-26T20:46:58
DATASUM = '2318144853' / data unit checksum updated 2019-08-28T17:59:25
DATE = '2019-08-28T00:00:00.000' / [ISO] Date_time of processing; ISO 8601 fo
TELESCOP = 'SDO/HMI' / For HMI: SDO/HMI
INSTRUME = 'HMI_SIDE1' / For HMI: HMI_SIDE1, HMI_FRONT2, or HMI_COMBINED
WAVELNTH = 6173. / [Angstrom] For HMI: 6173.3 Angstroms
BUNIT = 'Mx/cm^2' / BUNIT: physical units of data, Mx/cm^2
CONTENT = 'Carrington Synoptic Chart Of Vector Magnetic Field' / CONTENT: Carrin
HISTORY New Module -- March 2014
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
BLD_VERS =  / (MISSING) Code release build number of program
CTYPE1 = 'CRLN-CEA' / Carrington Time
CTYPE2 = 'CRLT-CEA' / Sine Latitude
CRPIX1 = 360.39999999999998 / [pixel] CRPIX1: 180 degree in x direction
CRPIX2 = 180.5 / [pixel] CRPIX2: Equator in y direction
CRVAL1 = 799020. / [Carrington Time] CRVAL1: x origin
CRVAL2 = 0. / [Sine Latitude] CRVAL2: y origin
CDELT1 = -0.5 / [degree/pixel] Carrington Time step in the x di
CDELT2 = 0.0055555555555555558 / [Sine Latitude/pixel] Sine Latitude in the y d
CUNIT1 = 'degree' / CUNIT1: degree
CUNIT2 = 'Sine Latitude' / [Sine Latitude] CUNIT2: Sine Latitude
CRDER1 = 0. / [arcsec] CRDER1: estimate of random error in co
CRDER2 = 0. / [Sine Latitude] CRDER1: estimate of random erro
CSYSER1 =  / [arcsec] (MISSING) CRDER1: estimate of systemat
CSYSER2 =  / [Sine Latitude] (MISSING) CRDER1: estimate of s
WCSNAME = 'Carrington Heliographic' / WCS system name
CADENCE = 360. / [Carrington Degree] repetition interval
DATASIGN = 1 / DATASIGN: sign of observable quantity wrt Sun c
T_OBS = '2019.08.09_06:48:20_TAI' / Time of Rotation Center
T_START = '2019.07.26_16:09:26_TAI' / Carrington Rotation Start Time
T_STOP = '2019.08.22_21:37:39_TAI' / Carrington Rotation Stop Time
T_ROT = '2019.08.09_06:48:20_TAI' / Carrington Rotation Middle Time
CAR_ROT = 2220 / Carrington Rotation
CARRTIME = 799020. / Carrington Time of Rotation Center
B0_ROT = 6.29911349789821 / [degrees] B0 angle
B0_FRST = 5.3273413566437613 / [degrees] B0 angle First
B0_LAST = 6.9490512682339522 / [degrees] B0 angle Last
LON_FRST = 798840.19999999995 / [degrees] First Longitude Time
LON_LAST = 799199.70000000007 / [degrees] Last Longitude Time
LON_STEP = -0.5 / [degrees] Time runs right to left
W_OFFSET = 0. / Nominal offset from central meridian
W_WEIGHT = 'Even' / Even
IMG_NUM = 724 / Number of magnetograms used
IMG_FRST = '2019.07.26_00:00:00_TAI' / Time of first contributing magnetogram
IMG_LAST = '2019.08.22_23:12:00_TAI' / Time of last contributing magnetogram
IMG_ROT = '2019.08.08_12:48:00_TAI' / Time of magnetogram nearest T_OBS
HWNWIDTH = 15. / [degree] Half width of selection
EQPOINTS = 20. / Number of contributed magnetograms
NSIGMA = 3. / Number of SIGMA
CARSTRCH = 1 / Differential Rotation correction: 1; not correc
DIFROT_A = 13.562000299999999 / Differential Rotation Parameter A
DIFROT_B = -2.0399999599999998 / Differential Rotation Parameter B
DIFROT_C = -1.4874999499999999 / Differential Rotation Parameter C
TOTVALS = 259200 / Expected number of data values (pixels)
BRVALS = 257500 / Actual number of data values in images (pixels)
BRMISSVA = 1700 / Missing values: TOTVALS
BRMIN = -319.55184936523438 / Minimum value from all pixels
BRMAX = 351.72970581054688 / Maximum value from all pixels
BRMEDN = 0.0062369583174586296 / Median value from all pixels
BRMEAN = 0.20291418916346332 / Mean value from all pixels
BRRMS = 11.139337566319016 / Rms deviation from the mean value of all pixels
BRSKEW = 1.3866164114224697 / Skewness from the mean value of all pixels
BRKURT = 129.85319861342057 / Kurtosis of all pixels
BTVALS = 257500 / Actual number of data values in images (pixels)
BTMISSVA = 1700 / Missing values: TOTVALS
BTMIN = -96.628684997558594 / Minimum value from all pixels
BTMAX = 119.62007904052734 / Maximum value from all pixels
BTMEDN = -0.0081446170806884766 / Median value from all pixels
BTMEAN = -0.23384109080627605 / Mean value from all pixels
BTRMS = 4.0977213352234827 / Rms deviation from the mean value of all pixels
BTSKEW = -4.4995610539793569 / Skewness from the mean value of all pixels
BTKURT = 95.487984355452241 / Kurtosis of all pixels
BPVALS = 257500 / Actual number of data values in images (pixels)
BPMISSVA = 1700 / Missing values: TOTVALS
BPMIN = -72.922477722167969 / Minimum value from all pixels
BPMAX = 68.797752380371094 / Maximum value from all pixels
BPMEDN = 0.018823890015482903 / Median value from all pixels
BPMEAN = 0.08974265929169109 / Mean value from all pixels
BPRMS = 2.9971366688337753 / Rms deviation from the mean value of all pixels
BPSKEW = 1.0407502022652027 / Skewness from the mean value of all pixels
BPKURT = 55.975715441220451 / Kurtosis of all pixels
CALVER64 = 270354 / Calibration Version
QUALITY = 0 / 32
RECNUM = 377 / Recnum
DRMS_ID = 'hmi.B_synoptic_small:377:Br' / DRMS ID
PRIMARYK = 'CAR_ROT' / DRMS primary key
LICENSE = 'LICENSE' / CC0 1.0
HEADSUM = 'g4B9j497g4A7g477' / Keyword checksum
LONGSTRN = 'OGIP 1.0' / The HEASARC Long String Convention may be used.
COMMENT This FITS file may contain long string keyword values that are
COMMENT continued over multiple keywords. The HEASARC convention uses the &
COMMENT character at the end of each substring which is then continued
COMMENT on the next keyword which has the name CONTINUE.